×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Precision Rectangular Tubing

Precision Rectangular Tubing

Precision Rectangular Tubing

(OP)
I recently reverse engineered a relatively simple product and found a key component was a set of precision rectangular tubes that served as the structure for a telescoping actuator. The tubes were steel and used thin plastic bushings as the bearing surfaces between the tubes. They were nested in that the inside surface of one held the bushings that contacted the outside surface of the next tube. There was no observable play in the fit and the fit did not appear to change through the full travel length of about 1m. The tubing is thin wall and shows no signs of welding or machining. I am familiar with the drawn over mandrel process for round tubing. Is there a comparable process for rectangular tubing or how else might these tubes be fabricated? Thanks! John

RE: Precision Rectangular Tubing

(OP)
Thank you EdStainless. I see the aspect ratio is limited to 1:1.16. The tubing I have is 1:1.5. Is the ratio a process limitation?

RE: Precision Rectangular Tubing

It depends on the size, some is and some isn't.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

White Paper - How ESI is Helping Move New Medical Device Product to Market Quicker & More Cost Effic
Early Supplier Involvement has long been a strategy employed by manufacturers to produce innovative products. Now, it almost seems like a necessity. Because decisions made in the design phase can positively affect product quality and costs, this can help add value to OEM bottom lines. This white paper will discuss many facets of ESI, including why it’s so valuable today, what challenges limit the benefits of ESI, how cost is impacted, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close